Professore che lavora nel suo ufficio, scrive e legge libri, ricerca e conoscenza - Foto e immagini stock

Professional academic researcher sitting at desk and studying, university and knowledge concept

Academic professor sitting at desk and working, he receives a phone call

Academic professor sitting at office desk, he is studying a human skull and writing a report

Corporate businessman sitting at office desk, he is cleaning his glasses and typing on a typewriter

Professor struggling with writer's block: he is sitting at desk and he is unable to have good ideas

Professor working at desk and human skull in the foreground, knowledge and research concept

Confident academic professor sitting at desk and posing, he is reading books

Young woman sitting at desk and working from home, she is typing on her laptop

Young girls at home studying astronomy on a book and watching the stars using a telescope

Professional wildlife photographer exploring a forest, he is checking the camera settings

Happy man walking alone in nature and relaxing, healthy lifestyle concept

Middle aged athlete exercising outdoors in the forest, he is checking his fitness tracker and smiling

Confused woman staring at the computer screen, e-learning and education concept